Grand Canyon National Park: 23 Annual Star Party 2013 - 0082
For eight days every June, park visitors and residents explore the wonders of the night sky on Grand Canyon National Park's South Rim with the Tucson Amateur Astronomy Association and on the North Rim with the Saguaro Astronomy Club of Phoenix.
Amateur astronomers from across the country volunteer their expertise and offer free nightly astronomy programs and free telescope viewing. NPS photo by Michael Quinn.
Learn more here: www.nps.gov/grca/planyourvisit/grand-canyon-star-party.htm